Emergency Service, HospitalHospital DepartmentsUnited States Department of Veterans AffairsRadiology Department, HospitalEmergenciesTriageEmergency MedicineUnited States Department of DefenseEmergency Medical ServicesUnited StatesPublic Health AdministrationRetrospective StudiesPathology Department, HospitalEmergency NursingWounds and InjuriesEmergency TreatmentProspective StudiesGovernment AgenciesUrology Department, HospitalUnited States Department of AgricultureHospitals, UrbanPatient AdmissionLocal GovernmentMedical Staff, HospitalEnglandAnesthesia Department, HospitalCrowdingChest PainHospitals, UniversityHospitalizationUnited States Dept. of Health and Human ServicesTime FactorsMedical AuditQuestionnairesOutpatient Clinics, HospitalPopulation SurveillanceHospitals, TeachingState GovernmentHealth Services MisuseObstetrics and Gynecology Department, HospitalInterdepartmental RelationsGreat BritainRadiology Information SystemsVeteransHealth Care SurveysSurgery Department, HospitalAccidentsPhysical Therapy Department, HospitalHospitals, PediatricData CollectionAmbulatory CareAcademic Medical CentersTreatment OutcomeOntarioEfficiency, OrganizationalRisk FactorsLength of StayPublic Health InformaticsPatient DischargePsychiatric Department, HospitalUnited States Government AgenciesAcute DiseaseMedical RecordsAmbulancesUtilization ReviewHospitals, GeneralInfant, NewbornGuideline AdherencePublic Health PracticeCraniocerebral TraumaHospitals, VeteransCaliforniaNew York CityPoisoningDiagnostic ErrorsAge FactorsTime and Motion StudiesIncidenceFollow-Up StudiesHealth Services ResearchPatient TransferPractice Guidelines as TopicCross-Sectional StudiesPediatricsPersonnel, HospitalMilitary MedicineNuclear Medicine Department, HospitalRadiographyFaculty, MedicalPoint-of-Care SystemsDisaster PlanningHealth Services AccessibilityRisk AssessmentAge DistributionVeterans HealthPublic HealthCohort StudiesQuality Assurance, Health CareAttitude of Health PersonnelHistory, 20th Century